blur background header

Background & Achievement of Thai Trafo Manufacturing Co., Ltd.

Thai Trafo Co,Ltd. has been established since 1986 whose objective is to produce and distribute standard and quality distribution transformers to domestic and overseas markets - under professional management of electrical engineers. With constant determination of its executives and staff, Thai Trafo has continually expanded.

Additionally, the rapid enlargement of energy industry markets caused an inadequacy in our first plant production capacity. Thus our second plant was built in 1996 at Rayong, Thailand in order to increase production capacity and quality of all transformers under title Thai Trafo Manufacturing Co, Ltd. Further, our Company has installed advanced machinery, test devices, and calibration devices, and has developed knowledge and expertise to every employee. As a result, all its transformers have passed a short circuit test and been certified by ASTA, KEMA and CESI.


Implement ERP (Navision)

Implement TIS/ISO 17025

Short circuit test for 60MVA 112/24kV


Expand management system to Power Transformer business

ISO 9001 Certified (DT and PT)


Implemented TIS/ISO 17025

License agreement from “KOLEKTOR ETRA to transfer know how of Power transformer”

Transformer pass short circuit test by CESI and KEMA


ISO 50001 Certified (Energy management system)


Thai labour standard :TLS.8001 standard certified

Establish Power Transformer factory


TIS/OHSAS 18001:2007 Certified


Start to Implement “Enterprise Resource Planning ( ERP ) System”

Developing an ISO 14001 Environment Management System


Applied Balanced Score Card & Key Performanced Indicators ( KPIs )


ISO 9001:2000 – certified by MASCI


Its transformers have passed a short circuit test by CESI


Its transformers have passed a short circuit test by KEMA


ISO 9001 – Certified by BVQI and TISI

Its transformers have passed a short circuit test by ASTA


ISO 9002 – Certified by BVQI


Second plant built at Rayong under title“Thai Trafo Manufacturing Co., Ltd.”


Its transformers have passed a short circuit test by ASTA.


Established “Thai Trafo Co.,Ltd”

Interested in our products

People in Thai Trafo